4521497664 has 56 divisors (see below), whose sum is σ = 11972856928. Its totient is φ = 1505940480.

The previous prime is 4521497639. The next prime is 4521497699. The reversal of 4521497664 is 4667941254.

It is a happy number.

It is a super-2 number, since 2×4521497664² = 40887882251114913792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244719 + ... + 262545.

Almost surely, 2^4521497664 is an apocalyptic number.

It is an amenable number.

4521497664 is an abundant number, since it is smaller than the sum of its proper divisors (7451359264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4521497664 is a wasteful number, since it uses less digits than its factorization.

4521497664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19163 (or 19153 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 48.

The square root of 4521497664 is about 67242.0825376490. The cubic root of 4521497664 is about 1653.5884757706.

The spelling of 4521497664 in words is "four billion, five hundred twenty-one million, four hundred ninety-seven thousand, six hundred sixty-four".